Visible crew/equipment: In the last scene there are three doctors standing in the corridor (I think it's Ross, Carter and Benton). You can see their tape marks for where they need to stand. When the camera pans out it pans too far and you can see where the corridor floor ends and the studio floor starts.

As Mark futilely pounds on Jodi O'Brien's chest, Carol can be seen in the background, removing her protective glasses with one hand. However, after the time of death has been called and they're showing the reactions of everyone present in the room (Susan, Carol, Carter, Lydia, Chen), Carol is seen taking the glasses off again, this time with both hands.

Doug Ross frequently hung his head low, appearing ashamed or thoughtful or privately amused, depending on the scene. This wasn't just an element of the character: George Clooney had taken to writing his lines on papers, sheets, and other props.